270win 120grsst

Guru 270 · August 2, 2023, 04:49 PM

Looking for help to load 120gr sst to 2700 fps for a reduced recoil load.

**Unclenick** · August 2, 2023, 05:43 PM

CAUTION: The following post (or a page linked to) includes or discusses loading data not covered by currently published sources of tested data for this cartridge (QuickLOAD or Gordon's Reloading Tool data is not professionally tested). USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assumes any liability for any damage or injury resulting from the use of this information.

Welcome to the forum.

My Hornady book (#10—I haven't purchased #11 yet) doesn't list the 120-grain SST, but it's got the 130 and a couple of 110-grain bullets, and squinting between the lines (right between a 2600 fps load for a 130 and a 2800 fps load for a 110), it looks like 41.8 grains of IMR4064 would be about where you want to go. I put the warning in the post because this isn't published data that I have my hands on, but these are both starting loads for their respective bullets that I am interpolating, so there should be no pressure issue. Use a chronograph to check what velocity you actually get. Note that the 4064 is very low on case fill with this load, so having the powder back over the primer will give higher velocities.

That said, the pressure is low with that little powder, so a faster one like IMR 4198 is likely to burn cleaner. Around 39 grains for a start with that.

Also, note that if you call Hornady and ask for load data, they will probably just give it to you.

Shadow9mm · August 3, 2023, 07:21 AM

What powders do you have?

Guru 270 · August 3, 2023, 12:55 PM

Thanks uncle nick glad to be here! Can I do the same with h4350. Take start load 130gr at 2800 then take the 110load at 2600 figure where middle ground between the two loads would be. 4064,h4350,w760 available at bass pro

old roper · August 3, 2023, 05:20 PM

MIGHT TRY HERE.

https://forum.accurateshooter.com/th...-data.4086864/

**Unclenick** · August 3, 2023, 07:26 PM

Based on Hornady's data, H4350 would run about 48.6 grains. The heavier charge will add to recoil and the slower burn rate powder will reach velocity at a lower peak pressure that won't burn it as cleanly and consistently as a lighter charge of a faster powder that reached the same velocity.

VV N135 looks promising to me as a good burn rate compromise with better bulk for the big case, but it's not available everywhere.

sako2 · August 3, 2023, 09:39 PM

Looking hodgdon data with a barnes 120gn bullet it looks like h414 or w760 would work.

stagpanther · August 4, 2023, 12:15 PM

Rather unusual pursuit--a soft-shooting 270 win. Following with interest.

**Unclenick** · August 4, 2023, 04:50 PM

Keep in mind the 120-grain Barnes bullet in the Hodgdon data is for the obsolete FXB type, which was a smooth surface copper solid. They achieved higher start pressures with less powder than an SST would do. H414 and 760 are both canister-grade WC760, one of the military powders made in the St. Marks, Florida plant. They are slower than H380, which is slower than IMR 4064. I think, because of potential ignition issues, IMR 4064 or faster is going to play more nicely in this reduced velocity exercise with the SST.

Guru 270 · August 4, 2023, 05:09 PM

What about 3031 found local

**Unclenick** · August 4, 2023, 05:14 PM

Should be a good choice.

August 2, 2023, 05:43 PM	#2
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,121	CAUTION: The following post (or a page linked to) includes or discusses loading data not covered by currently published sources of tested data for this cartridge (QuickLOAD or Gordon's Reloading Tool data is not professionally tested). USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assumes any liability for any damage or injury resulting from the use of this information. Welcome to the forum. My Hornady book (#10—I haven't purchased #11 yet) doesn't list the 120-grain SST, but it's got the 130 and a couple of 110-grain bullets, and squinting between the lines (right between a 2600 fps load for a 130 and a 2800 fps load for a 110), it looks like 41.8 grains of IMR4064 would be about where you want to go. I put the warning in the post because this isn't published data that I have my hands on, but these are both starting loads for their respective bullets that I am interpolating, so there should be no pressure issue. Use a chronograph to check what velocity you actually get. Note that the 4064 is very low on case fill with this load, so having the powder back over the primer will give higher velocities. That said, the pressure is low with that little powder, so a faster one like IMR 4198 is likely to burn cleaner. Around 39 grains for a start with that. Also, note that if you call Hornady and ask for load data, they will probably just give it to you. __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle

August 3, 2023, 07:21 AM	#3
Shadow9mm Senior Member Join Date: March 21, 2012 Location: Indianapolis, IN Posts: 4,043	What powders do you have? __________________ I don't believe in "range fodder" that is why I reload.

August 3, 2023, 05:20 PM	#5
old roper Senior Member Join Date: June 11, 2007 Posts: 2,157	MIGHT TRY HERE. https://forum.accurateshooter.com/th...-data.4086864/ __________________ Semper Fi Vietnam 1965 VFW Life member NRA Life Member

August 3, 2023, 07:26 PM	#6
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,121	Based on Hornady's data, H4350 would run about 48.6 grains. The heavier charge will add to recoil and the slower burn rate powder will reach velocity at a lower peak pressure that won't burn it as cleanly and consistently as a lighter charge of a faster powder that reached the same velocity. VV N135 looks promising to me as a good burn rate compromise with better bulk for the big case, but it's not available everywhere. __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle

August 4, 2023, 12:15 PM	#8
stagpanther Senior Member Join Date: March 2, 2014 Posts: 11,976	Rather unusual pursuit--a soft-shooting 270 win. Following with interest. __________________ "Everyone speaks gun."--Robert O'Neill *I am NOT an expert--I do not have any formal experience or certification in firearms use or testing; use any information I post at your own risk!*

August 2, 2023, 04:49 PM	#1
Guru 270 Junior Member Join Date: August 1, 2023 Posts: 3	270win 120grsst Looking for help to load 120gr sst to 2700 fps for a reduced recoil load.

August 3, 2023, 12:55 PM	#4
Guru 270 Junior Member Join Date: August 1, 2023 Posts: 3	Thanks uncle nick glad to be here! Can I do the same with h4350. Take start load 130gr at 2800 then take the 110load at 2600 figure where middle ground between the two loads would be. 4064,h4350,w760 available at bass pro

August 3, 2023, 09:39 PM	#7
sako2 Senior Member Join Date: April 12, 2009 Posts: 744	Looking hodgdon data with a barnes 120gn bullet it looks like h414 or w760 would work.

August 4, 2023, 04:50 PM	#9
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,121	Keep in mind the 120-grain Barnes bullet in the Hodgdon data is for the obsolete FXB type, which was a smooth surface copper solid. They achieved higher start pressures with less powder than an SST would do. H414 and 760 are both canister-grade WC760, one of the military powders made in the St. Marks, Florida plant. They are slower than H380, which is slower than IMR 4064. I think, because of potential ignition issues, IMR 4064 or faster is going to play more nicely in this reduced velocity exercise with the SST. __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle

August 4, 2023, 05:09 PM	#10
Guru 270 Junior Member Join Date: August 1, 2023 Posts: 3	What about 3031 found local

August 4, 2023, 05:14 PM	#11
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,121	Should be a good choice. __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle